llvm/test/Analysis/alias-analysis-uses.ll
Sanjoy Das 81c2fc4c81 Add an "addUsedAAAnalyses" helper function
Summary:
Passes that call `getAnalysisIfAvailable<T>` also need to call
`addUsedIfAvailable<T>` in `getAnalysisUsage` to indicate to the
legacy pass manager that it uses `T`.  This contract was being
violated by passes that used `createLegacyPMAAResults`.  This change
fixes this by exposing a helper in AliasAnalysis.h,
`addUsedAAAnalyses`, that is complementary to createLegacyPMAAResults
and does the right thing when called from `getAnalysisUsage`.

Reviewers: chandlerc

Subscribers: mcrosier, llvm-commits

Differential Revision: http://reviews.llvm.org/D17010

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260183 91177308-0d34-0410-b5e6-96231b3b80d8
2016-02-09 01:21:57 +00:00

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LLVM

; RUN: opt -debug-pass=Executions -globals-aa -functionattrs -disable-output < %s 2>&1 | FileCheck %s
; CHECK: Executing Pass 'Globals Alias Analysis'
; CHECK-NOT: Freeing Pass 'Globals Alias Analysis'
; CHECK: Executing Pass 'Deduce function attributes'
; CHECK: Freeing Pass 'Globals Alias Analysis'
define void @test(i8* %p) {
ret void
}